More than 140 ancient geoglyphs were found carved in the sands of Peru
https://edition.cnn.com/2019/11/20/world/geoglyphs-discovery-peru-scn-trnd/index.html
It's nearly impossible to know genuine purpose of why geoglyphs were drawn.
But, it's interesting that geoglyphs can only be seen in South and Central America. What made people there to draw geoglyphs?
